I abandoned my religious teachings after I read the Bible twice - cover to cover. It took me a couple of years.
Teaching creationism in science class as an alternative to evolution is inappropriate.
Incidentally, the creationists that I've encountered diligently deny that our Earth's climate is being altered by people. This point of view and teaching is in absolutely no one's best interest. Here's hoping we can work together and preserve the Earth, for us - us humans.